Fire-extinguisher.



G. T. PEARSONS.

FIRE EXTINGUISHER.

APPLICATION mso FEB. 5. 191s.

Patented July 25, 1916.

m wm .2., wm

um mwswmm am www GEORGE T. PEARSONS, OF NEW YORK, N. Y.

FIRE-EXTINGUISHER.

Specification of Letters Patent.

Patented July 25, 1916.-

Application filed February 5, 1916. Serial No. 76,244.`

Torall whom it -may'concern lie it known that I, Grouse T. PEAnsoNs, a citizen of the -United States, residing in the borough of Manhattan, city, county, and State of New York, have invented Iiew and useful Improvements in Fire-Extinguishers, of which the following is a specification.

`This invention relates to syringes in which pumping mechanism is provided in a cylinder or reservoir to create an air pressure in the reservoir and such air pressure utilized to eject a liquid contained in the reservoir, and it is the object of the invention to provide improved lmeans to obtain this result which are simple and cheap in construction and edicient in operation, and which are adapted for tire extinguishers.

A further object of the invention is to provide means in a syringe ofl this type whereby the outlet of the reservoir is at all times connected with the liquid in the lowermost part of the reservoir no matter in what position theoutlet of the syringe may be.`

Anotherobject of the invention is to provide means to close the outiet of the reservoir to prevent leakage therethrough when the syringe is not in use, and to permit of the creating of an air pressure in the reservoir by the pumping mechanism previous to the dischargingof the contents of the reservoir by said air pressure.

In the drawing accompanying and forming a part of this specification there is illustrated in sectional sideY 'elevation a syringe with an embodimentof my inventio applied theretof n the embodiment of my invention shown iii the drawing I provide a. tank or reservoir for a fire extinguishing liquid, said reservoir consisting of a body portion 2, preferably cylindrical in shape, and the ends 8 and. 4 Secured thereto as by soldering or otherwise, the end 3 having a discharge outlet 5 in coaxial alinement with the axis of the reservoir, and a filler opening closed by a plug 6. The end 3 is preferably' d ished as shown to permit of the standing of the syringe upon a horizontal surface, although meansl may be providedl to suspend the syringe yfrom a hook or the like.

Mounted in the reservoir at one side of the longitudinal axis and adjacent the side. is a piston chamber consisting of the cylinder 7 havin'g a driving fit in a bore in heads 8 and -9 in the cylinder, the head or end 9 abutting against the reservoir end 4, and the bore therein being of the same diameter as the inside of the cylinder 7 and extending through said head 9 and registering with an opening in the reservoir end 4 of the saine diameter. The outer end of the bore is internally screw threaded for the engagement of a flanged perforated nut 10. rIVhe engagement of the nut in said head 9 clamps the reservoir end between the flange ot the nut and the head 9 thereby securing the. piston chamber to said end 4 and supporting it therefrom. The iston cylinder 7 with its connected heads is of less length than the length of the reservoir. Each'of the heads 'S and `9 has a recess 11 inthe lateral wallv communicating with the piston chamberwhen the heads are securedv thereto, and said recesses are adapted to :register with openings in the body portion 2 of the reservoir.

These recesses 11 have internal screw threads for the reception of perforated fianged plugs or caps 12 and 12 from the exterior of the rescrvoir, .the inner ends of Said plugs being A constructed to constitute seats for balls 13,'

normally retained in said seats to close the .openings or perforationsin the plugs by springs 14, The valve plugs also serve to support the piston chamber in the reservoir. Airis drawn alternately through the openings in the plugs to opposite ends of 'the piston chamber by a piston 14, havingsuitable packing, reciprocable in the piston chamber by a rod 15 extending through the opening in the nut 10 and astutiing box 1G carried by said nut to the exterior of the piston chamber and reservoir, and has an operating handle 17 fixed to the outer end.

To eject the air which is alternately drawn into opposite ends of the piston chamber into the reservoir, I provide a tube 18 conneet-ed at one end to the rod 15, as at 19,

said tube slidably engaging in and at all times extending through an' opening in the end 8 of the piston chamber and a stufing Vbox 20 carried by said end. The end of the opening spring cheek valve 24, the outer diameter of said valve being the same as the diameter of the tube. By this construction it will b'e obvious that upon removal of the nut 1'0 the-piston with the tube 1,8 may be readily removed from the piston chamber for the substitution of parts or otherwise and replaced.l a

-During the initial outward movement of the piston rod l5 the said rod with the tube 18 vwill have a limited movementV independvent of the piston until the latter engages -with the abutmentiZ-fl' 4thereby uncovering `the ports and covering the ports .2l when the piston will move with the rod drawing -movementof the piston air will be drawn into the piston chamber through the port in plug l2', and the air previously drawn into the 'piston chamber in front of the piston will be ejected through the ports 21 and Lube lo 'into the reservoir, the pressure of such air readily uns-eating the val-:e 24. and upon the next outward movement ofthe piston the air in the tube in the piston will be ejectedv through the ports 22 into-the reservoir, andtheforegoing described operation will continue so loi'g as the piston is reciproeated.

To at all times connect' the outlet of. the

`reservoir with. the liquid in the lowei'x'iiost part of the reservoir no matter in what position the lsaid outletmay be, l fix a tube J5 at one end'in -said outlet, said tube extending through an epi-ning in a projection ofthe cnil S of thepiston chanilier and into a bore 2t in a projecting portion of the other end l) of' the pistou chamber .so that the inner end of thi- Luhe will lie adjacent the reservoir.-

i-,iid l: ...'fl`lie bore 2li registi-.rs with an Opening in said i-iid 4 and is closed by a flanged plu.;r o r uiit 27, tl'iiis.p| \'iilirig a chamber with which thei-.iid of the. tube is in cornmiiiiieatiou. tube 2H of somewhat greater diameter than the outlet tube 2 5, and through which the latter passes, is rotatably supporti-.d :it one end iii a stiilliugbox 2f in thei-iid w'pol' the pistou ehiuvribei",andtlieother end iu :i s'tiilliiig box il() in the opposite end fl of the piston chamber;- ,said stalling box Il() and thc tubi- "./S .werving to close the cuil ofthe boril opposite the plugI 27 so that such bore will constitute an entirely closed chainliifr with which the i-iids of the tubes and 2H are iii ioiiiiuuniiation. ily thisl construirlion the tube 254 is adapt-eil to suing around the tube as :in atia and the axi.` ol thi` i'isirroir. (Aoniiceti-il to the tube '2N hy a lateral branch tube or pip-e ill is a pipior tube 32, said tube32 extending longitudil nelly of and with its ends adjacent the ends and sides ofthe reservoir. The Aends of the tube V32 are constructed to 'constitute seats for balls 3 3 carried by cages,.in the form of caps 3ft, connected to the ends of thetube .with thev outer ends-closed, sald closed outer ends-'serving as supports for the ball when tioned that when the ball is these? "unseated To permit entrance ofthe liquid l ports will be sli litlyf above the ballfto pr'e- Y vent anypossibi ity of the balls being forced to' 'their seats by pressure inserted' thereon by liquid entering through'the ports', It.

will. be obvious that should the discharge end A i 'of the reservoir tilted -down from the horizontal that the ball atthe then upper end of the tube will be .automatically seated closingsaid endof the tube and 'thev ball at the then lower 0nd of the A,reservoir will' drop away from the seat and wi lbe lsos'upported as toprevent the liqui from entering through the ports 35 in .the ballcarrying cage to force saiflball to its'seat. l l.

To prevent leakage of liquidthat may en ter through tubes 32 and 3lnto--tliechmber 2G through the outlet tube 25 whenthe syringe is not in use, and .to'pcrlnit of theA crei'iting of an air pressure inthe reservoir by the pumping mechanism to beiiitili'zedf for the discharge of the liquid. fro m`,tl1e .v

reservoir, l provide a valve37 having 'a' stem 3S passing through the--plug-27 to open and close the valve from'Y thelexterior fof' the rese-wolf.

This -steni' passes vthrough a stalling box carried-by` the plug 27 andA has screw-threaded connection witlrthelatter,

and the valige is manipulated bya finger piece 40 {ixed to the other end of the stem.

The end of the tube-25 preferablyl has a. l(

member 39 to constitute a scat for the valve 37.

lIn operation the valve 3 7 bleing closed the pumping mechanism is actuated `to create air pressure in the reservoir. Vlfhenthis airpressure is suicient pumping ceases and the valve 37 is opened by the 'linger prece t0nwhen the pressure ofthe airwill cause-the liquid in the reservoir to pass through one of the ends of the Intake tube 32, 'depending upon the position in which the syringe is held7 and through pipes 32,' 31, and 28 to the chamber 2G and from said chamber through the outlet tube 2 5. 'i

Variations maybe resorted to within the` I scope of my invention` v Y Having thus described my invention I claim:-

l. ln aV syringe, the combination with a reservoir having an outlet, of a piston chamlier in said reservoir havingintakos from the exti-.rior of the reservoir; a piston reciprocahie in said chamber; a tube reciprocable with the piston and slidably engaging in one end of the piston chamber within the reservoir to connect the piston chamber with the reservoir,l said tube having ports Within the piston chamber the opening and closing of which ports is controlled by the piston duringvthe reciprocation thereof to alternately' connect the tube through the ports with the piston chamber at opposite sides of the piston, substantially as and for the purpose specified.

In a syringe, the combination with a i reservoir having an outlet, ay cylinder thcrein having air intakes at opposite ends from the exterior of the reservoir; a piston to reciprocate in the cylinder; a tube reciprocable with the piston and slidable in one end of the cylinder' within the reservoir to connect the cylinder with the reservoir; and a rod to reciprocate the piston and tube from the end of the` cylinder opposite to the tube, and said piston during the reciprocation thereof alternately connecting the inner end of the tube to the cylinder at opposite sides of the piston, substantially as and for the purpose specified.

3. In a syringe, the combination with a reservoir having an outlet; of a cylinder therein having air intakes at its ends from the exterior ot the reservoir and having an outlet in one end; a tube slidably engaging in the cylinder outlet and having ports adjacent the end within the cylinder; a piston reciprocable in the cylinder mounted on said tube to control the opening and closing of the tube ports and alternately connect the tube with the cylinder at opposite sides of the piston; and means extending to the exterior of the cylinder and reservoir oppo- Site to the tube to reciprocate the piston and tube, substantially as and for the purpose specitied.

4. ln a syringe, the combination of a reservoir having an outlet; a cylinder having suction air intakes at its ends from the exterior of the reservoir and having an opening in one end; a tube Slidable in the opening in the cylinder end to connect the cylinder with the reservoir and having spaced apart ports at the end within the cylinder; a piston rcciprocable in the cylinder slidably mounted on said ytube to draw air into the cylinder and to control the opening and closing of the tube ports to alternately connect the tube to the cylinder at opposite ends of the piston; and a rod to reciprocate the piston and tube extending exterior ot' the cylinder .1nd reservoir opposite. to the tube.

5. In a syringe, the combination of a reservoir having an outlet; a cylinder therein having air suctionl inlets adjacent its ends from the exterior of the reservoir and an opening in one end into thc reservoir; a tube slidable in the cylinder opening to connect g5 the cylinder with the reservoir and having a series of spaced apart lateral ports at the end within the cylinder; abutmcnts at opposite sides of the ports; a piston on the tube to have movement between the abutments to control the opening and closing of the ports; and a rod extending from the end of the cylinder and reservoir opposite to the tube to reciprocate the piston andtube and cause the piston to cover and uncover the tube ports t0 alternately connect the tube with the cylinder at opposite ends of the piston, substantially as and for the purpose specified.

' 6. ln a. syringe, the combination of a reservoir having an outlet; a cylinder therein having air suction inlets at its ends from the exterior of thel reservoir; a tube reciprocable in a cylinder end within the reservoir to connect the cylinder with the reservoir, the inner end of said tube having spaced apart lateral ports and an outwardlyy opening and inwardly closing valve at the op )osite end; a piston reciprocable in the cyllnder with the tube and having a limited to and fr0 movement on the tube to control the o ening and closing of the ports to alternate y connect said tube with the cylinder at opposite sides of the piston; and a rod extending to the exterior of the cylinder and reservoir opposite the outlet to reciprocate the piston and tube. substantially as and for the purpose specified. f

7. A syringe comprising a reservoir' having a discharge outlet; a cylinder having air suction inlets; a piston reciprocable in thc cylinder; a tube reciprocable with the piston and at all times communicating at one cud with the reservoir and having ports controlled by the piston to alternately connect the tube with the cylinder at opposite ends of the piston during the reciprocation thereof; and a handle exterior ot the cylinder opposite to the discharge outlet to reciprocate the piston.

S. In a syringe, the combination of a cylinder' having a discharge outlet in one end `coaxial with the cylinder; a piston chamber in said cylinder having air suction inlets from the exterior ofthe cylinder adjacent opposite ends and an air outlet leading into the cylinder; piston mechanism to draw. air into the piston chamber through the air inlets and eject it into the cylinder through the air outlet; and an intake to the cylinder outlct to swingl on an axis centrally of the cylinder, substantially as and for the purpose spccilied.

i). In a syringe, the combination of a cylinder having an outlet in one end coaxial with the cylinder; a piston chamber in said cylinder located at one side of the axis of the cylinder having air suction inlets from the exterior ot the cylinder adjacent opposite ends and an air out-let into the cylinder; piston mechanism to draw air into the pist0n chamber' through the air inlets and eject it ,into the cylinder; and intakes to the cylinder outlet comprising a tube extending longitudinally of the cylinder with its ends lying adjacent the sides and at opposite ends of the cylinder and adapted to oscillate on an axis in line with the cylinder outlet and parallel with the piston chamber, substantially as and i'r'or the purpose specified.

10. In a syringe, the combination of a cylinder having an outlet at one end coaxial with the cylinder; a piston chamber in said cylinder located at one side of the axis of the cylinder having air suction inlets from the exterior of the cylinder adjacent. oppo- Site ends and an outlet into the cylinder; piston mechanism to draw air into the piston chamber through the air inlets and eject it into the cylinder; a discharge tube fixed at on'e end in the cylinder outlet and extending into the cylinder to a point adjacent the opposite end of the cylinder; and an intake to said discharge tube comprising ay tube extending long jitlulinally otl the cylinder with its ends lying adjacent the sides and opposite ends of the cylinder and connected to the discharge tube to swing around ."aid tube, substantially as and for the purpose specified.

11. ln a syringg'e` the combination ot a cylinder having: an outlet at one end in line with the axis of the cylinder; a piston chamber in said cylinder located at one side of the axis of the lylindenhaving' air suc tion inlets adjacent opposite ends and an outlet into the cylinder: piston nu-chanisni to draw air into lhc piston chamber through the air inlets and eject it inlo the cylinder; a tube fixed at one end in the cylinde" onllet and extending into the cylinder to a point adjacent the opposite end ot' the cylinder; and intakes to said tube comprising;` a tube extending' longitudinally ol' the cylinder with its ends lyin; r adjacent the sides and at opposite ends of the cylinder and havingV means to connect said tube lo the lirst tube and support the same lo oscillatc around thc first tube as an axis` substantially as and for the purpose specified.

12. lin a syringe, the combii'iation of a cylinder ha ving an outlet at one end coaxial with the cylinder; a piston chamber in said cylinder located at one side of lhe axis of the cylinder having air suction inlets and an outlet into the cylinder; piston mechanism to draw air into the piston chamber through the air inlets and eject it into the cylinder; a tube fixed at one end in the cylinder outlet and extending into the cylinder to a point adjacentthe opposite end of the cylinder; an intake tube to said rst tube to swing around said tube as an axis; and a valve operable from the exterior of the cylinder to engage with the end of said first tube extending into the cylinder to close lhc same` substa niallv as and for the purpose spwfilied. i

i3. In a s), ringe, the combination ot a cylinder ha vingrr an outlei at one end c-/laxial with the cylinder; a pira chamber in `aid cylinder located at one de ot' the axis of the cylinder having sneion inlets and an outlet into the cylinder: pieton mechanism to draw air into the piston chamber through the air inlets and eject it into the cylinder; a tube fixed at one end in the cylinder outlet; said tube extendirngY through a projection on one end of the piston chamber and into a bore in a projection ol the other end of the piston chamber; a tube through which the first tube extends rotatably sup ported in the projections on the ends of the piston chamber and connected to the outlet tube through the bore in the projection on the outer end of the piston chamber: a l ally projecting` branch tube connected to said latter tube; and a, tub(- c'nnei-,Lcd to the branch tube extending! iongetaflnially ot the cylinder with its endsl ly :aljaccnt the Sides and at opposite ends oi' the cylinder, and inwardly closing and outoardly opening valves for the ends ol` said latter tube, substantially' as and for the purpose specified.

ll. ln a syringe, the combination of a reservoir l'or a liquid having' a discharge outlet; a piston chandler in said reservoir; a pistonlo recipwswite in the piston cham-- ber; vabed air inlets to the piston chamber on opposite sides ot' the piston 'from the exterior ot' the reservoir; a tube slidabiy mounted in one end ot' the piston chamber and reciprocalic with the piston, said tube having ports in the end within the piston chamber, the opl-niner and closing of which ports are controllwl by thc piston to connect said tube with lie piston chamber at opposite sides ol the piston dazrima the rcfsproczc tion of thel piston;` a spring' intlucin-el valve, carried at. the end of the tube within the reservoir, said valve opening' fait'ivarl from, and closingr into the tube: and mean,V` to i` ciprocate the pistons and ruhe. sailstantiailr as and ior the, purposeI specified,

l5. ln a syringe; thc combination of reservoir to contain a liquid having a dis charge outlet; a piston chamber in said reservoir; a piston to reciprocate in the piston chamber; suction air inlets to the piston chamber on opposite sides ot' the piston from the exterior of the reservoir; and air outlet means from the piston chamber to the., reservoir to discharge the air drawn into the piston chamber en opposite sides of the piston into the reset-wir during the reeiprocation ot the piston subsi ntially as and for the purpose speeifd.

16. In a syringe, the coinoinatien with a 'reservoir for a liquid having a discharge outlet, of a pump comprient-eA a vision a i tudinally Cylinder in the reservoir in which the piston is arrangwd tn reciprocate and divided by said pi ten into two emnpartments, suction air inletzw from the exterior of llnresetten* to earli nf said cnnipartnlents and air nutlet means commun tn ljmtli nf said rempart- Aments te d:-1elmr,\1f tlm nir drawn inte tlu compartments from said cmniairtniruts inte the remfruir during tlm reviprnratnn e1 the piston, substantially and for the puriiese sperified. v

1T, in a syringe. the rmnbinatmn with a cylinder tu contain a liquid having a flimrliarge outlet in one end enaxial with the cyl index'. nl a [visten rlnnnl'wr in aid ifjlindei a pistou to reciprecate in tlm pinten cham lier; suetinn air inletsto tlir pistnn chamlar on appetite aides of the piston frein tlie exeriur of the u i'linder: air outlet means from the pintan rlianilmr to the rylinder to disch-mfr the air drawn inte tlm pistnn rlnunliea n-n e'pmite wlw if tln pntun intu tile ullindvr during! the ri-riinnratinn nl the wistful: and in intake tulle extending: lnnginl' tlnf cylinder with its onday alt )af-,tint tin* sido und opposite ende nii' the C.\lluder wiuwiffed te the outlet d time rviin der, fit--ftzmtially as and for tlm purpose :spew-ir 2.

lbf. lr a "ffrn'zgfe, lla mniliinatinn 'with a cylinder t contain a liquid having l's a i elxargr eutlr-t in une end coaxial wiyli rl e cylinder, of a piston chamber in Said c ylin` der; a piston to reciprocate in the piston chamber; suetinn air inlets to the piston rliainlwer on opposite yles of the pistenfrom tho exterior of the cylinder; air outlet means from tllejniston chamber t0 the Cylinder to discharge theA air drawn into the piston chamber nn oppositisides of the piston into the r'if'linder durinLr the reciprocation of the pinten; said piston chamber and piston being; lorated adjacent the wall of the cylinder; and a tulle connected t0 the outlet of the vlinder extendingr parallel with the piston rlianiber with itu ends adjacent tlie side if tlm rylindvr oppngite the piston chamber and at opposite ends et the cylinder, substantialljyv as and for the purpose specified.

19. In a syringe., the combination with a reservoir tn Cnntain a liquid having an outlet, of a pistfin rliainlwr in Said renei'voir, :i pistnn to rrciprorae in said chamber, a suc-. tien air inlet from the exterior of the reser- `wir (u the piston rliamlwer en appunto, sides of the pinion; air nutlet means` freni the pistnn 'i'ainlwr in :,-H"-'ir; and an intake talw mtrnding lung-it rdinall'v of the reservar with ith` ends adiafrcent the side and 0ppnsite ends nl the rewrrnir ennneetvd to the outlet nl' tlm: rwrrmir tn nsrillate en an axis rentrallv nt' the rrsrrvwir. Substantially as and lm' tlnpurmse Specified.

(llt). T. PEARSONS. 

